†subfamily Pachynolophinae Paulow 1877 (odd-toed ungulate)
Mammalia - Perissodactyla - Palaeotheriidae
Parent taxon: Palaeotheriidae according to B. Bai 2017
See also Checa and Colombo 2004 and Remy 2012
Sister taxa: Cantabrotherium, Eurohippus, Franzenium, Hyracotherium, Iberolophus, Leptolophus, Orolophus, Palaeotheriinae, Paraplagiolophus, Propachynolophus, Pseudopalaeotherium
Subtaxa: Anchilophini Bepitherium Lophiotherium Metanchilophus Pachynolophus Propalaeotherium Qianohippus
Ecology: ground dwelling frugivore-folivore
Distribution:
• Eocene of Belgium (2 collections), China (3), France (38), Germany (30), Spain (8), Switzerland (10), the United Kingdom (7), United States (1: Wyoming)
Total: 99 collections including 164 occurrences